The financial historian Professor Niall Ferguson says he expects to see more revelations in the coming days about how the Libor rate was fixed.

He tells Sarah Montague that the scandal surrounding the fixing of the inter-bank rate goes much wider than Barclays and means the reputation of the City of London is at stake.

'Empower Bank' to discipline City argues Niall Ferguson

You can watch the full interview on BBC World News on Wednesday 4th July at 03:30, 08:30, 15:30 and 20:30 GMT and on the BBC News Channel on Wednesday 4th July at 04:30 BST and on Thursday 5th July at 00:30 BST.

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